Runner mount



Patented Sept. 26, 1944 UNITEDY STATES PATENT OFFICE RUNNER MOUNT p Donald E. Meehan, Washingtom'D. C. Application November 30, 1942, serial No. 467,379

(ol. 28o-2s) 3 Claims.

My invention relates to sleds, and has among its objects and advantages the provision of an improved runner mount wherein the cushioning means is interposed between the runner and the load carrying part of the sled.

In the accompanying drawing:

Figure 1 is a top view of the runner mount.

Figure 2 is a sectional view along the line 2--2 of Figure 1, and

Figure 3 is a sectional view along the line 3-3 of Figure 1. Y

In the embodiment of the invention selected for illustration, the runner I is provided with an upstanding body I2 which may be flxedly secured thereto Iby welded connections I4. These parts are adapted for association with a sled frame or the like having, for example, the parts I6.

To the frame parts I6 is xedly attached a tube I8 having a closed upper end 20. Inside the tube I8 is slidably mounted a tube 22. The tubes are arranged vertically. A body 24 is xedly se-V cured inside the lower end of the tube 22 and y constitutes an abutment engaged by the lower end of a spring 26 having its upper end engaging the end wall 28. 'Ihus the tubes I8 and 22 are telescopically related, so that the tubes have free relative longitudinal movement for cushioning purposes, as through shortening and lengthening of the spring 26. A flat and circular head 28 is provided with a stem 30 threaded into the lower end of a bore 32 in the body 24, the latter being [provided with an upstanding tube 34 of the same diameter as the Ibore 32. A recess 36 is provided in a body 38 for partly housing the head 28, and the head is pivotally connected with the body 38 by a pin 40.

A recess 42 is provided inthe bottom face of the head 38 to receive the body I2, the two bodies being pivotally connected by a shaft 44. This shaft is xedly connected with the body I2 and functions as a means for turning the runner I0 about its longitudinal axis, as more fully set forth in the above identified application.

Inside the tube 34 is arranged a piston head 46 attached to a rod 48 extending through an opening in the end wall 50 of the tube. This rod is threaded through the end wall 20 as at 52 and is provided with lock nuts 54.

The tubes 22 and 34 are connected as a unit, and the piston 46 is slidably tted in the tube 34 to function as an air compressing meansV for damping the action of the mount'when operating over relatively rough terrain. A spring 56 is interposed between the piston 46 and the end wall 5U to `function as a cushioning medium in extreme upward excursions of the tube I8 and the piston 46 relatively to the tubes 22 and 34. Air

trapped between the piston 46 and the4 lower chamber of the tube 34 operates as a cushioning means so as to dampen downward thrusts of the tube vI8 and the piston.

Without further elaboration, the foregoing will so fully explain my invention, that others may, by applying current knowledge, readily adapt the same for use under various conditions of service.

I claim:

1. In a sled, the combination of a runner having a rst body, a second body pivotally connected with the rst body for movement about an axis paralleling the runner, a third body pivotally connected with said second body for movement about an axis at right angles to the runner, a load supporting frame, a rst tube xedly connected with said frame, a second tube xedly Arelated to said third body and slidably guided inside said rst tube, a third tube inside said second tube and xedly related to said third body, a spring interposed between said third body and one end of said rst tube, a piston slidable in said third tube and havingA a stem xedly connected with said first tube, and a spring interposed between said piston and one end of said third tube.V

2. In a sled of the type described, the combinationV of a runner, a load -carrying means, a resilient connection between said runner and said means, said connection comprising a rst tubular member attached to said means, a second tubular member .pivotally connected with said runner and slidably guided inside the rst member, a spring interposed between the rst and second members and housed therein, a third tubular member iixedly related to the second ktubular member and arranged therein, and an air compressing piston slidable in said third tubular member and xedly connected with said rst tubular member.

3. In a sled of the type described, the combination of a runner, a load carrying means, a resilient connection between said runner and said means, said connection comprising a first tubular member attached to said means, a second tubular member pivotally connected with said runner and slidably guided inside the rst member, a spring interposed between the first and second members and housed therein, a third tubular member iixedly related to the second tubular member and arranged therein, an air cornpressing piston slidable in said third tubular member and xedly connected with said first tubular member, and a cushioning spring interposed between one end of said piston and one end of the third tubular member.

DONALD E. MEEHAN. 

